Java Data Structures courses can help you learn about arrays, linked lists, stacks, queues, and hash tables. You can build skills in algorithm efficiency, data manipulation, and implementing search and sort techniques. Many courses introduce tools like Eclipse or IntelliJ IDEA, which support coding practices and debugging, allowing you to apply your knowledge in real coding environments. You'll also explore concepts such as recursion and tree structures, enhancing your ability to tackle complex programming challenges.

Tata Institute of Social Sciences
Skills you'll gain: Public Policies, Policy Development, Policty Analysis, Research, and Development, Governance, Policy Analysis, Social and Human Services, Economics, Policy, and Social Studies, Program Implementation, Social Justice, Public Administration, Community Development, Diversity and Inclusion, Advocacy, Program Evaluation, Empowerment, Stakeholder Engagement
Beginner · Course · 1 - 3 Months

Infosec
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Distributed Denial-Of-Service (DDoS) Attacks, Application Security, Security Testing, Authorization (Computing), Authentications, Data Validation, Encryption, Security Controls, Data Security, Vulnerability Scanning, Role-Based Access Control (RBAC), Verification And Validation, Intrusion Detection and Prevention, Database Application, Security Awareness, Cybersecurity, Web Servers, Web Development Tools
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Rust (Programming Language), Authentications, Back-End Web Development, Web Servers, Databases, Web Applications, Secure Coding, Restful API, Application Programming Interface (API), Programming Principles, Data Structures, Debugging
Intermediate · Course · 1 - 4 Weeks

Fractal Analytics
Skills you'll gain: Ideation, AI Product Strategy, UI/UX Research, Brainstorming, Innovation, Design Thinking, User Research, AI Enablement, Generative AI, Competitive Analysis, User Experience Design, Human Centered Design, Data Ethics, Persona (User Experience), Artificial Intelligence, Problem Solving, Data Collection, Data Synthesis, Critical Thinking
Beginner · Course · 1 - 4 Weeks

Automatic Data Processing, Inc. (ADP)
Skills you'll gain: Talent Pipelining, Talent Sourcing, Recruitment, Talent Acquisition, Applicant Tracking Systems, Recruitment Strategies, Talent Management, Professional Networking, Interviewing Skills, Job Analysis, Verbal Communication Skills, Market Research
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: User Interface (UI), User Experience, Persona (User Experience), User Interface (UI) Design, User Flows, User Interface and User Experience (UI/UX) Design, User Experience Design, UI Components, Visualization (Computer Graphics), User Centered Design
Beginner · Guided Project · Less Than 2 Hours

LearnQuest
Skills you'll gain: Responsible AI, Backlogs, AI Product Strategy, Data Ethics, Scrum (Software Development), AI Enablement, Sprint Planning, Sprint Retrospectives, Risking, Scaled Agile Framework, Artificial Intelligence, AI Personalization, Prompt Engineering, Agile Software Development, Agile Methodology, AI Workflows, Agile Project Management, Agile Product Development, Generative AI, Predictive Analytics
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Verification And Validation, Computational Logic, System Requirements, Data Validation, Functional Requirement, Systems Design, Theoretical Computer Science
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Computer Hardware, Hardware Troubleshooting, Cloud Computing, General Networking, Network Troubleshooting, TCP/IP, Virtualization, Network Protocols, Dynamic Host Configuration Protocol (DHCP), Mobile Security, Peripheral Devices, System Configuration, Wireless Networks, Data Storage
Beginner · Course · 1 - 3 Months

Howard University
Skills you'll gain: Linear Algebra, NumPy, Applied Mathematics, Algebra, Python Programming, Data Manipulation
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Content Performance Analysis, Social Media Marketing, Content Development and Management, Content Creation, Web Analytics, Social Media Management, Content Strategy, AI Personalization, Web Analytics and SEO, Market Analysis, Data-Driven Decision-Making
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft Azure, Cloud Management, Spring Framework, Responsible AI, Java, Artificial Intelligence, Technical Services, Cloud Deployment, Restful API, Debugging
Intermediate · Course · 1 - 4 Weeks